Does dental caries cause bad breath?

Dental caries can cause bad breath if it is not treated clinically. It is caused by various bacteria in the mouth, such as Streptococcus mutans, which corrodes teeth and causes bacteria in the mouth for a long time. But bad breath is not only caused by dental caries, but also personal indigestion or gastrointestinal problems. Therefore, it is not only necessary to check the mouth, but also to find the cause from all aspects of the digestive tract.